Water-intercepting means



Feb. 2 ,1926.

' E. A. LYNN WATER I NTERCEPTINQ MEANS Filed June- 18, 1920 IIIIYH Patented Feb. 2, 1926.

UNITED STATES rrsar OFFICE.

EARLE A. LYNN, 0F SPOKANE, WASHINGTON, ASSIGNOR 'IO SULLIVAN MACHINERY COMPANY, A CORPORATION 013 MASSACHUSETTS.

WATER-INTEBCEPTING MEANS.

Application filed June 18, 1920. Serial No. 389,975.

1 0 all to 7mm it may concern:

Be it known that 1, Emma A. LYNN, a citizen of the United States, residing at Spokane, in the county of Spokane and State of lVashington, have invented certain new and useful Ill'iPlOVGlHGDlZS in Waterintercepting Means, of which the following is a full, clear, and exact specification.

My invention relates to water interceptmeans and particularly to water intercepting means for use on rock drilling devices.

An object of my invention is to provide an improved water intercepting device for rock drills. A further object of my invention is to provide an improved water intercepting device especially adapted for attacl'nnent to rock drills of the stopcr type. Further objects of my invention will appear in the course of the accompanying specification and appended claims.

In the accompanying drawii'igs I have shown for purposes of illustration two embodiments which my invention may assume in practice.

In these drawings,-

Fig. 1 is a view partially in elevation and partially in section on a central plane through the forward end of the chuck and rotation mechanism of a stoping drill.

Fig. 2 is a sectional view taken on the line 22 of Fig. 1.

Fig. 3 is a fragmentary view similar to Fig. 1 showing a second form which my invention may assume.

It is a well-known fact to those who are familiar with the operation of that type of rock drill known as self-rotating stopers that in drilling overhead holes or holes above the horizontal there is a troublesome tendency of the cleansing fluid in flowing back out of the hole to run back down the steel and into the chuck mechanism. This results in a considerable throwing of the re turning fluid because the chuck is rapidly rotating and centrifugal force throws the liquid upon all who may be close to the drill. For the purpose of obviating this diiliculty, I ha've provided improved means adapted for attachment to said drills, operating to cause the returning liquid to fall straight down without incon'nnoding the drill runner in any degree.

Referring to the drawings, it will be noted that I have shown the illustrative embodigrooves 3 and spiral grooves 4t and cooperat mg mechanism to cause rotation of the chuck member 5. The chuck member comprises a bushing 6 with which the forward end of the striking bar cooperates, a chuck housing member 7, and a chuck member proper 8. Within the chuck housing member 7 is formed a chamber 9 within which a striking pluglO is arranged. The chamber 9 is provided with outwardly and generally downwardly directed passages 11 to permit the escape therefrom of fluid passing back down the drill steel. To impede throwing of this fluid an apron 12 directed nearly straight downward surrounds the openings of the passages. It has been found, however, that this apron is not universally satisfactory and that in very soft work the flow of liquid may be so copious as to wet the drill runner in a very short time. For the purpose of preventing the throwing of this fluid by centrifugal force I have devised an attachi-nent generally indicated by 13 (and formed of elastic sheet metal when used as shown in Fig. 1) which comprises a cup like member having a perforated bottom 14L and an annular side wall 15, the bottom 14 having a plurality of holes 16 formed therein to permit the flow of liquid out of said member. The sidewall 15 extends forwardly beyond the rear end of the apron and accordingly intercepts water thrown off from the edge of the apron by centrifugal force. This device may be held in place upon the forward end of the drill motor by its elasticity, being merely clamped in place by its inherent springiness, as shown in Fig. 1, or when the shape of the forward end of the drill motor will permit, as shown in Fig. 3, a pair of larger holes 17 may be provided, these being adapted to receive the side rods 18 and, being engaged by the heads 19 of such side rods, to hold the intercepting de vice in position. It will be evident that, in the event that the water supplied toa hollow drill steel 20 by way of a usual water tube 21, or in any other manner, flows backward along the steel on issuing from the hole, this water, when it passes downwardly from the chamber within the chuck housing,

will be intercepted upon its being thrown from the apron by centrifugal force and will then drop, due to the action of gravity, directly downward through the holes in the intercepting attachment.

While I have in this application specifically described two forms which my invention may assume in practice, it will be understood that these forms of the same are shown for purposes of illustration and that the invention may be modified and embodied in other forms without departing from its spirit or the scope of the appended claims.

What I claim as new and desire to secure by Letters Patent is:

1. In combination with a rock drill having a rotating chuck and means for supplying cleansing fluid to a drill steel adapted to be received in said chuck, an attachment comprising a perforated annular portion in a plane transverse to said drill elastically gripping a stationary portion of said drill, and a portion coaxial with said drill and adapted to intercept liquid returning along said drill steel when the liquid is thrown by said chuck.

2. The combination with a drilling mechanism comprising a steel adapted to have longitudinal movement and allow a flow of fluid through the same, said mechanism having means for discharging a return flow of fluid along said steel, of means resiliently engageable with a portionof; said mechanism and supported independently of said movable steel for deflecting said discharged fluid.

3. The combination with a drilling mechanism comprising a steel adapted to have longitudinal movement and allow a flow of fluid through the same, said mechanism having means for discharging a return flow of fluid along said steel, of means including a split member resiliently engageable with a portion of said mechanism and supported independently of said movable steel for deflecting said discharged fluid.

4. The combination with a drilling mechanism comprising a steel adapted to have longitudinal movement and allow a flow of fluid through the same, said mechanism having means for discharging a return flow oft fluid along said steel, of means including a generally annular perforated split member resiliently engageable with a portion of said mechanism and supported independently of said movable teel for deflecting said discharged fluid.

In testimony whereof I aflix my signature.

EARLE A. LYNN. 

